Toilet bowl



FIG. 1 is a perspective view of a toilet bowl showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a left-side view thereof; and,

FIG. 6 is a right-side view thereof.

The ornamental design for a toilet bowl, as shown and described.